四五年级混合运算习题.docx

1、四五年级混合运算习题4/5 25/16 + 2/3 3/414 8/7 5/6 12/1517/32 3/4 9/243 2/9 + 1/35/7 3/25 + 3/73/14 2/3 + 1/61/5 2/3 + 5/69/22 + 1/11 1/25/3 11/5 + 4/345 2/3 + 1/3 157/19 + 12/19 5/61/4 + 3/4 2/38/7 21/16 + 1/2101 1/5 1/5 215016040（58+370）（64-45）120-14418+35347+452-416052（58+37）（64-95）(6.8-6.80.55)8.50.12 4.80

2、.124.87.20.8-1.25= 6-1.193-0.43=6.5（4.8-1.24）= 0.681.9+0.321.910.15-10.750.4-5.75.8（3.87-0.13）+4.23.744/13+7/131-5/6+2/31/3-1/4+1/55/91/5122/3+4/331/3+1/21/44+2/34/5-1/21/73/14-5/82/52/3(5-5/3)5/69/52/3+4/58/71(1-2/3) 1/32/3(3/4-1/6) 1/56/5(3-6/5)+11/47/22/7-51/216/5-(3/4+3/2) 10/910/33/7+20/33/7(1/

3、3+1/5) 1519/51/9+1/5941/7+10/37/4+1/62/31/2-1/42/52-6/139/26-2/32/9+1/24/5+3/8105/9+1/641/22/5+9/109/205/93/10+2/72/51/2+1/44/5-1/83/45/74/3-1/223-8/91/271/2785/6+2/541/2+3/45/124/58/93/4-3/83/45/85/4+3/239/115/6+5/34/55/8-1/4(8/92/3)(1/2-1/6)3/51/52/5+4/15-2/56/75/8+3/87/6(7/11-3/8)8813-48(1/12+1/1

4、6)(7/8-5/16)(5/9+2/3)8/137+1/76/131-(1/4+8/3) 1/47/911/5+2/95/11(1/6+3/4-2/3)122-6/139/26-2/39999/1002/7(4/5-2/3)(2/3+1/4 3/4) 1/4(3/10+2/5) 5/71/25/8+1/43/53/42/5+1/45/210/217/205/6-1/44543/44(3/8-1/4) 3/83/8(3/8-1/4)5/64-(7/8+2/3)5-7/8-0.1251-(1/4+3/8) 1/4(1/5+1/6) (1/5-1/6)(4/5+1/2) 5/23/4-3/44/5

5、-95/7+4/9+2/7+5/92-5/7-2/75/74/9149/165/718-5/7412(7/9-2/3) 9/105/4-1/39/5-2/57/303/57/302/55/2x+1/10=61/105/6-16/77/8=281(4/5-1/5)=316(1/4-1/8)3/42/53/42/541/5-1/541/8+31/3-1/817/254/3+8/254/315/7+9/85/9+3/8(1/6+4/9) 3/41.2542.582.63+5.8+7.37+4.22.58-1.6+3.4258.65-(3.2+8.65)48-（5.2+2.0310）3215+（32.6+8.09）23.5-2.8-7.22.63+5.8+7.37+4.25.5+2.81+4.5=5.63+8.8+4.37+1.22.38-2.4+3.6232.3-（5.02+2.0310）3218+（32.6+18.09）27.5-6.8-3.224.56-(8.2+4.56)(750+240）（0.3100）6.81-4.4+5.19